Originally Posted by
stueys
Is it essentially a subjective guideline that the flight deck interprets or is there some science to when to flick the sign on?
I recon it’s the former.
I have been on flights that have been far from smooth with occasional rough patches for a minute or two with no seatbelt lights being switch on and on others where seatbelt lights come on and stay on for ages despite total smooth flying conditions.
I'm pretty sure the flight deck crew put on the fasten seatbelt lights on here and there to assist the cabin crew in keeping passengers in their seats at certain times (during meal preparations etc)